A Stanford University professor and prominent ufologist says he “100 percent” believes extraterrestrials have not only visited Earth — but have “been here a long time” and may even still be on the planet today. Dr. Garry Nolan, a professor of pathology at Stanford’s medical school, made the stunning claim during last week’s Salt iConnections conference in Manhattan at a session titled, “The Pentagon, Extraterrestrial Intelligence and Crashed UFOs.” Moderator Alex Klokus asked Nolan if he believes extraterrestrial life has visited Earth, and the prof replied, “I think you can go a step further — it hasn’t just visited, it’s...